Fix themed settings icons.

- Added android prefix for homeAsUpIndicator attribute
- Override ic_arrow_down_24dp from androidx
- Remove ic_lock drawable overlay
- Update date and time icon
- Dedupe ic_menu_add and ic_add_24dp

Bug: 131346125
Test: mp settings;
Change-Id: I7223249f2adccc5569a37e8b68cae5499e7c7620

src/com/android/settings/print/PrintSettingsFragment.java

@@ -242,7 +242,7 @@ public class PrintSettingsFragment extends ProfileSettingsPreferenceFragment
         }
         Preference preference = new Preference(getPrefContext());
         preference.setTitle(R.string.print_menu_item_add_service);
-        preference.setIcon(R.drawable.ic_menu_add);
+        preference.setIcon(R.drawable.ic_add_24dp);
         preference.setOrder(ORDER_LAST);
         preference.setIntent(addNewServiceIntent);
         preference.setPersistent(false);